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Yale New Haven Health breach hits 5.5 million patients
Connecticut's largest health system said hackers who got in on 8 March copied data on 5.56 million patients, the largest US healthcare breach of the year.
- Organisation
- Yale New Haven Health
- Disclosed
- 11 April 2025
- Affected
- 5,556,702
- Data
- Names, dates of birth, SSNs, patient details
- Attacker
- Unknown
- Severity
- critical
- Region
- Global
- Source
- Security Affairs ↗
Cite this
Nuffield Consulting, “Yale New Haven Health breach hits 5.5 million patients”, The Daily Tech Wire outage & breach log, 11 Apr 2025. https://techwire.nuffieldconsulting.com/incidents/2025-04-11-yale-new-haven-health-breach/ (retrieved 15 Nov 2026).
This entry summarises public reporting. Please also cite the original source: Security Affairs, https://securityaffairs.com/176937/data-breach/yale-new-haven-health-ynhhs-data-breach-impacted-5-5-million-patients.html.
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